Thanks for the explanation.

OP's point is a weird flex though, like pointing out that a bicycle never runs out of gas...

Those are on the graphics adapter. Not in the CRT.
You can update the framebuffer faster than the CRT can draw. That's when you get tearing. Same VSync then as now.

CRTs (apart from some exceptions) did not have a display buffer. The analog display signal is used to directly control the output of each electron gun in the CRT, without any digital processing happening in-between. The computer on the other end however does have display buffers, just like they do now; however eliminating extra buffers (like those used by modern monitors) does reduce latency.

I warn you before you dive in, this is a rabbit hole. Some key points (not exact, but to make things more layman): You don't see in digital, digital is "code". You see in analog, even on an LCD (think of sound vs video, its the same thing). Digital-only lacked contrast, brightness, color, basically all adjustments. So the signal went back and forth, adding even more latency.

Maybe think of it like a TVs game mode, where all the adjustments are turned off to speed up the digital to analog conversions.

Or like compressed video (digital) vs uncompressed video (analog), where the compression means you can send more data, but latency is added because it is compressed and uncompressed at each end.

Ok fine, at the speed of light then.

When one of your times is in milliseconds, while the other requires awareness of relativistic effects, you might as well call it instant.

The propagation speed in copper is 2/3 C. With analogue monitors, that was effectively amped and thrown at the screen. The phosphate coating is the slowest part, that takes 0.25-0.5ms to respond fully.

By comparison, at the time, "gaming" LCD screens were advertising 23ms response rates.

Well yes, the speed of light in this case.